Cross-head bearing.



H. M. LANms. CROSS HEAD BEARING. 'APLICATION FILED FEB-16| 1915.

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HENRY M. LANDIS, 0F WOLFORD, NORTH DAKOTA.

CROSS-HEAD BEARING.

Specification of Letters Patent.

Patented Nov. 2d, imi?.

Application tiled February 16, 1915. Serial No. 8,538.

To all whom t may concern.'

Be it known that I, HENRY M. LANDIS, a citizen of the United States, residing at Wolford, in the county of Pierce and btate of North Dakota, have invented new and useful Improvements in Cross-Head Bean ings, of which Vthe following is a specification.

This invention relates to cross head bearings for engines, the object in view being to produce a cross head bearing which will opcrate with less friction than the ordinary cross head bearing now in common use, effect ing a proportionate economy in steam and a proportionate increase in power.

l/Vith the above and other objects in view, the invention consists in the novel construction, combination and arrangement of parts,

as will be hereinafter more fully described, illustrated and claimed. Y

In the accompanying drawings Figure l is a side elevation of a cross head bearing embodyingV the present invention, showing the cross Vhead at the center of its throw.

Fig. 2 is a similar view showing the cross head at one end of its throw.

Fig. 3 is a similar view showing the cross head at the other limit of its movement.

Fig. i is a diagrammatic view illustrative of the movements of the several parts of the device.

Fig. 5 is a plan view of the two armed lever.

Referring to the drawings l designates the piston rod of an engine, 2 the connecting rod, 3 a cross head carrying one or more pins to which the rods l and 2 are connected, and 4 a wheel provided with the wrist pin 5 to which the connecting rod 2 is attached.

In carrying out the present invention I make use of a two armed lever, said lever comprising the two arms 6 and 7 which, in the preferred embodiment of the invention, are connected together in fixed relation to each other by means of a cross journal or crank 8, the part 8 being journaled in a bearing opening 9 in the cross head 3. The journal 8 passing through the cross head 3 locates the arm 6 at one side of the cross head 3 and the other ar1n7 at the opposite side of said cross head.

The movement of the two armed lever is controlled by means of a pair of rectilinear motion links 10 and 11, the link 10 being pivotally connected at 12 to a xed point on the engine frame and pivotally connected at 13 to the arm 7 of the two armed lever. The other link 11 is pivotally connected at 1l to a fixed point on the engine frame and pivotally connected at 15 to the extremity of the other arm 6 of the two armed lever.

The rectilinear motion links l0 and l1 and the two armed lever are of such lengths and the pivots referred to are at such distances apart that the cross head travels in a rectilinear path. This is illustrated in the diagrammatic view, Fig. 4, in which the line a-a represents the path of travel of the cross head 3, the line ca -Z) representing the link 11, and the line a-c representing the link l0. rllhe links l0 and 11 are of exactly the same length and the length of the two armed lever is proportionate to the length of said links, said two armed lever being indicated by the line (Ze-e in the diagrammatic view. The movements of the lever have been indicated in dotted lines in said diagrammatic view so as to be easily traceable showing that the cross head travels in a perfectly rectilinear path. This does away with the usual guides and brasses or wearing plates at present in use on locomotives, stationary engines and the like, and thereby greatly reduces the friction between the cylinder and the wrist pin of the engine. This correspondingly cconomizes in steam or other fuel and also increases the effective power of the engine.

What I claim is The combination of a cross head, and supporting and guiding means therefor, comprising a shaft extending through and ournaled in said cross head, a single base extending parallel to the path of movement of the cross head and arranged wholly at one side thereof, arms extending at right angles to said shaft in opposite directions and located at opposite sides of the cross head, and links crossing each other and pivotally connected to the extremities of said arms and to said base, the distance between the pivots connecting said links to the base being the same as the distance between the pivots connecting said links to the arms.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY M. LANDIS. Witnesses Mrs. H. M. LANDIS, ROBERT JACKSON.

Copies et this patent may bewobtaiaed for ve cents each, by addressing the Gcmmissioner or Patente, Washington, la. G. 

